Ford Super Duty Owner's Manual
Anybody come across anything interesting reading your owner's manual?
Forum Discussion
Ford doesn't make the orange coolant anymore and the yellow coolant is backwards compatible. Meaning you can mix the yellow with the orange. I don't believe Ford sells a booster for the yellow since it already last extremely long. The OP is purchasing a new 2021 Super Duty so it will come with Yellow coolant so the orange coolant is no longer a issue.
That's good info since coolant is the next fluid change on my list, I've done trans, differential and transfer cases. All easier than I expected
